西安电子科技大学学报（自然科学版）2017，Vol.44Issue(1)：34-39,118,7.DOI:10.3969/j.issn.1001-2400.2017.01.007
尺度形状描述子
Scale shape descriptors
摘要
Abstract
In order to more effectively deal with scale changes of shapes , the scale shape descriptors (SSD) are designed by utilizing shape contexts (SC) or Gaussian shape contexts (GSC) with different scales as basis shape descriptors . Firstly , the scales of shape descriptors as intra‐layer scales are determined based on the reference shape . Different inter‐layer scales used to establish scale cubes of the test shape . Secondly , we calculate the mean distance between every layer of scale cubes and the test shape , and search the nearest scale of the master shape based on the mean distance . Thirdly , the spline interpolation is used to more accurately estimate the optimal scale . Then shape descriptors are built based on the optimal scale and the point to point correspondences are exactly determined on the basis of which the registration transform is calculated . Experimental results show that the SSC can well overcome the difficulties caused by scale changes in shape registration .关键词
形状上下文/尺度立方体/样条插值/最优尺度/形状配准Key words
shape context/scale cube/spline interpolation/optimal scale/shape registration分类
信息技术与安全科学引用本文复制引用
冯祥卫,冯大政,李海鹏..尺度形状描述子[J].西安电子科技大学学报（自然科学版）,2017,44(1):34-39,118,7.基金项目
国家自然科学基金资助项目 （）
